摘要
研究目的:大跨钢梁斜拉桥的索梁锚固区是斜拉桥的关键区域,其结构受力复杂且作用荷载较大,仅依据有限元的仿真分析难以准确掌握锚固区的应力分布和传力机理,本文以珠江黄埔大桥(北汊桥)的索梁锚固区静载试验为基础,研究了锚箱式索梁锚固结构的应力分布规律和传力机理。研究结论:珠江黄埔大桥(北汊桥)锚箱试验模型设计合理,能够反映实桥的受力行为;锚箱式索梁锚固结构传力流畅、结构安全,能够满足大跨度钢梁斜拉桥的功能要求。
Research purposes： The cable-girder anchor zone of long span steel cable-stayed bridge is the key zone where bears giant cable forces with the complicated load-bearing situation.It is hardly to get the actual stress distribution and the mechanism of the stress transferring only by FEM analysis.Based on the static load test to the cable-girder anchor zone of the Huangpu Pearl River Bridge,this paper researches the stress distribution and the mechanism of the stress transferring of the anchor-box type cable-girder anchor structure.Research conclusions：The design of the anchor-box test model for the Huangpu Pearl River Bridge is reasonable and the model can reflect the actual mechanical behavior of the bridge.The anchor-box type cable-girder anchor structure can transfer the stress smoothly and safely and it meets the functional requirement of the long span steel cable-stayed bridge.
出处
《铁道工程学报》
EI
北大核心
2010年第10期74-77,共4页
Journal of Railway Engineering Society
关键词
索梁锚固
仿真分析
模型试验
锚箱
钢梁斜拉桥
cable-girder anchor
simulation analysis
model test
anchor box
steel cable-stayed bridge
